Electric switch



.(No Model.)

G. T. EYANSON.

ELECTRIC SWITCH.

No. 581,706. Patented May 4,1897.

Witnesses.

UNITED STATES PATENT OFFICE.

GEORGE T. EYANSON, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC SWlTCH.

SPECIFICATION forming part of Letters Patent No. 581,706, dated May 4,1897.

Application filed March 8 ]0 aZZ whom it may concern;

Be it known that I, GEORGE T. EYANSON, a citizen of the United States,residing in the city and county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inElectric Switches, of which the following is a full, clear, and exactdescription, reference being had to the ac companying drawings, forminga part of this specification.

This invention relates to electric switches, having reference moreespecially to improve ments in the switch set out in my Letters Patentof the United States No. 542,848, dated July 16, 1895, to whichreference may be had, my object herein being to provide a simple andefficient double-terminal construction possessing the quick-breakfeature of my patented switch, as will be hereinafter particularlydescribed and claimed.

In the drawings, Figure 1 is a side elevation of a switch embodying myinvention. Fig. 2 is a longitudinal section thereof as 011 the line 00at of Fig. 1.

A represents a base; B B, spring-clips arranged thereon in pairs toconstitute the terminals for the wires Z) Z), respectively, of twobranch circuits, and C C similarly-arranged clips electrically connectedby means of strips 0, to which are attached the terminals 0 for themain-circuit wires 0 D D represent pivoted blades adapt-ed to be engagedwith and disengaged from the clips B O and B C, respectively, for thepurpose of making and breaking the circuits as desired. These blades areconnected in V form and are pivoted at their apexes to brackets or lugs(I, mounted on the base interme- (hate the clips 0 C, the free ends ofsaid blades being connected by means of a yoke E, whereby the two setsof blades may be operated simultaneously. This yoke, in its preferredform, comprises two transverse bars c, connected by a middle portion 6,in which is formed an elongated slot or opening e Mounted on the baseintermediate the bracket d is a bracket f, to which is pivoted one endof an arm F, the other or free end of which extends through the slot oropening in the yoke and terminates in a handle. Hence by the act ofswinging the arm on its pivot Serial No. 584,270. (No model.)

there will be effected the operation of the connected blades inreference to their respective clips. Secured to this arm near its pivotare two diverging flat springs G G, the outer or free ends of whichextend through the slot in the yoke, so as to bear normally against theupper and lower edges, respectively, of the slot, and thus maintain thearm midway between said edges.

Assuming the blades D to be engaged with the clips B O to complete thecircuit Z) 0 if the handle be grasped and forcibly raised the spring Gwill be pressed under considerable tension while the arm is moving tothe top of the slot, and in the continued upward stroke of the arm theyoke and therewith the blades will be bodily raised. WVhen the blades Dapproach the mouths of the clips, the tension of the compressed spring,overcoming the grasp of the clips upon the blades, will suddenly projectthe yoke and blades upward, and thereby effect a quick breaking of thecircuit. By swinging the arm farther to the right, as indicated by thearrow in Fig. 2, the blades D will be engaged with the clips C B in amanner to complete the circuit 1) c whereupon if the arm be forciblyraised the spring G will be compressed and a quick breaking of thecircuit will be effected, similarly to the operation above described.

I claim as my invention- 1. In an electric switch, the combination ofdouble circuit-terminals, pivoted blades for the respective sets ofterminals, an open frame or yoke connecting said blades, an operating-arm extending through said frame or yoke so as to have vertical playtherein, and oppositely-actin g springs, coacting with said arm and therespective blades, substantially as described.

2. In an electric switch, the combination of double circuit-terminalsagivoted blades therefor arranged in V form, a slotted frame or yokeconnecting the outer ends of said blades, a pivoted operating-armextending freely through isaid frame or yoke so as to have vertical playtherein, and oppositely-acting springs coacting with said arm and therespective blades, substantially as described.

8. In an electric switch, the combination of double circuit-terminalsarranged in pairs, as

described, pivoted connecting-blades for the In testimony whereof I havehereunto afrespeetive terminals, an open or slotted yokefixed mysignature in the presence of two subfrzune connecting the blades, anoperatingscribing Witnesses.

arm extending through said yoke-frame, and GEORGE T. EYANSON. 5 twooppositely-acting flat springs connected \Vitnesses:

With the arm and engaged With the yoke- JOHN R. NOLAN,

frame, substantially as described. ANDREW V. GROUPE.

